Material discharging device



June 28, 1932. IDEACQN ET AL 1,864,529

MATERIAL DISCHARGING DEVICE Filed June 15, 1929 gmentoz v Jbhn HDeacon.

Car/H. Hartman.

Patented June 28, 1932 UNITED STATES] JOHN H. DEACON, or GENOA, am) our. a. murmur, or 'roLnno, omo, nssrenons, in

PATENT oF IcE MESNE ASSIGNMENTS, '1'0 8'1. REGIS PAPER COMPANY, OF NEW YORK, N. Y., A 003.-

PORATION OF NEW YORK MATERIAL, DISGHARGING DEVICE Application filed June 18, 1829. Serial No. 370,688.

This invention relates to material-discharging devices, and more particularly to means for maintaining a discharge passagewa Y clear from clogged material.

n the following specification, the invention is disclosed as applied to the discharge tube of a packer for valve bags, and comprises means for applying compressed air to the tube to clear it of clogged material, whenever required.

In the accompanying drawing forming a part of this specification, Figure 1 is a partial sectional view of apparatus embodying the invention; Fig. 2 is a front view of the airapplying means and its connection to two filling tubes; and Fig. 3 is a side elevation of a portion of the mechanism.

A well known type of device for filling valve bags comprises a casing 10 enclosing a propeller 11 which forces material outward through a discharge opening 12 into and through a filling tube 13 into a valve bag, the valve of which is placed over the tube. Tube 13 is connected to a casting 14 which fits against casing 10, usually leaving a groove 15 therebetween through which a closing gate may slide.

In the construction shown, there is a passage 16 in casting 14 leading into the discharge passage at an angle. Passage 16 is connected by a nipple 17 to a horizontal pipe 18 fed by a pipe 19. In theconstructionshown,eachend of a pipe 18 is connected to a passage 16 leading to a filling spout 13, and a valve 20 is provided in pipe 18 between each end and its junction with pipe 19. A handle 21 on a rod 22 operates the valve, which is normally closed but can be opened by depressing or otherwise operating handle 21. Rod 22 is guided by a bracket 23 attached to any suitable portion of the framework.

In operating the device, whenever material clogs in spout 13, it may be cleared by opening the associated valve 20. Passage 16 is directed towards the outlet end of the spout, so that the air tends to force material outward rather than back into the casing. When a gate in slot 15 closes access to the easing, the air clears the spout in front of the gate.

The clearing air may be applied at the betion disclosed in the drawing, the air supply is shown as provided for a fillin device suc as shown in the patent to Louis No. 1,419,627, June 13, 1920. In this device the filling spout is mounted upon a weighing device, and a flexible sleeve 24 is provided for allowing limited vertical movement of the spout relatively to casing 10. When the spout-carrying frame drops in response to the weight of material filled into the bag, the gate is automatically tripped and closed.

It will be obvious that any material in the movable end of the spout is supported on the weighing device, and so is included with the material being weighed when the gate is tripped. If the same amount of material remains in the spout each time after the gate is closed and the bag removed, it may be classed with the permanent parts carried by the weighing device, and does not interfere with accuracy of weighing; but it will be readily understood that any irregularity in the amount of material remaining in the spout-introduces a corresponding irregularity in the weighing. For this reason, unless the spout is cleared before each bag is removed, it should be cleared at the beginning rather than the end of the filling operation. However, when the pipe is cleared at the end of each filling operation, itavoids any difficulty arising from irregular amounts of material remaining in the spout. The action of the device is, of course, independent of whether a flexible connection or other joint is used between the casing and filling spout.

' Various changes in the device shown and described can be made within the terms of the appended claims.

What we claim is:

1. In combination, a casing having a discharge opening, a propeller within the casing adapted to force material through the opening, a discharge spouthaving a cylindrical passage leading from said opening, there being an air passage through the side of said Hartman,

spout into the side of said cylindrical passage and directed towards the discharge end of the spout, and means for supplying compressed air to said air passage.

2. In combination, a casing having a discharge opening, a propeller within the easing adapted to force material through said opening, a discharge spout having a cylindrical assage adapted to receive material from sai opening, said spout being adapted to be mounted on a weighing device w ich may automatically close said opening, said spout having an an passage through its side into the side of said cylindrical passage adjacent the point where material is received from said opening, and means for supplying compressed air to said air passage.

3. In combination, a casing having a discharge opening, a propeller within the casing adapted to force material through said opening, a discharge spout having a cylindrical passage adapted to receive material from said opening, said spout being adapted to be mounted on a weighing device which may atuomatically close said opening, said spout having an air passage through its side into. the side of said cylindrical passage adjacentthe point where material is received from, said opening, and means for supp-lyin com-. pressedair to said air passage, said air pas-.

sage being directed towards the discharge end of said spout.

4. In combination, a plurality of filling'de-. vices each comprising a casing having a tan-. gential discharge opening,-a propeller within the casing adapted to' discharge materiah through the opening, and a spout having a. discharge passage in tangential alignment; with said opening, there being an air passage. through the wall of the spout into the side of said discharge passage directed towards the. discharge end of the spout, a common pipe, connected to said air passages, means to sup-.

' ply the pipe with compressed air and a sep-.

arate valve for each filling device controllingthe passage of the air from said pipe to said 1 air passage. 1

In testimony whereof we have hereunto, signed our names to this specification.

JOHN H. DEACON. CARL H. HARTMAN. 

